title: Authors' reply to Reynolds.
authors.forename: Toby
authors.initials: T
authors.lastname: Hillman
authors.forename: Frances
authors.initials: F
authors.lastname: Mortimer
authors.forename: Nicholas S
authors.initials: NS
authors.lastname: Hopkinson
mesh_terms: D000280:Administration, Inhalation; D058995:Dry Powder Inhalers; D057232:Global Warming / Q000517:prevention & control*; D009330:Nebulizers and Vaporizers